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[脩怎] 脩怎撘瑕憟隞逵ail2ban銋摰鋆閮剖

[銴鋆賡包
頝唾唳摰璅撅
璅銝
潸” 2016-4-9 12:53:54 | 芰閰脖 撣 |甇摨閬 |梯璅∪
砍敺 IT_man 2016-4-9 22:36 蝺刻摩 & b) a. e7 _2 X' o) {3 y) u8 }

: L, Q2 P8 d  R4 \) S, X啣:
7 G$ d" N; z) Z- g% RCentOS 6.7    爹edHat蝟餃潸穿Fedora蝟颯嚗潸祉鞈閮 /etc/redhat-release嚗
( \# s; T- a& ?: p6 I8 T, p* T$ F1.肘um摰鋆fail2ban
/ }+ s0 A; ^! v  \# Uyum -y install fail2ban   (yum摰鋆甇瑞閮 /var/log/yum 銝准憒閬蝣箄撌脣鋆憟隞塚臭誑剜亥岷閮瑼)# ~' m) y- s. A
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憒銝餈唳郊撽銝賢鋆fail2ban,暻慶um憿舐內曆啗府憟隞嗥嚗雿閬脣仿甇仿& e5 Z2 Z2 I' i, ~8 C, [% [5 C
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yum憟隞嗅澈靘瘙箏閬憒雿摰鋆憟隞嗚嗉望審ail2ban銝虫券閮剔憟隞嗅澈銝哨隞交敹亙急fail2ban憟隞嗅澈atrpms+ b2 E; O( n, q7 w

3 y. U7 H) S: c: W2 y4 s隢蝺刻摩 /etc/yum.repos.d/CentOS-Base.repo 嚗+ K/ b' ?: G, P0 o6 k+ A
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vi /etc/yum.repos.d/CentOS-Base.repo
1 S6 Y) V7 |# E6 q* ?' O0 n冽敺乩誑銝閮剖嚗
" t  f& u, r5 {( `) p  M
2 B; e/ _! f% T* T[atrpms]
: V( \8 {7 u- D; dname=Red Hat Enterprise Linux $releasever - $basearch - ATrpms
. A* }' ^5 z, \' kbaseurl=http://dl.atrpms.net/el$releasever-$basearch/atrpms/stable$ e4 B# q$ {5 i# S. v! f$ E4 ~
gpgkey=http://ATrpms.net/RPM-GPG-KEY.atrpms
/ z% Q- c" w( ?1 G" j! dgpgcheck=1
5 d* b+ U# f& H; _; M1 d% d% kenabled=1
" t  l3 f, y* v/ q; D/ p+ R. v
! N8 Z% d4 U8 V- S. q( t& ^% u2. 閮剖fail2ban, P9 Z. N) E! f, D! t
銝餉拙閮剖瑼嚗/etc/fail2ban/fail2ban.conf 頝 /etc/fail2ban/jail.conf7 n. s$ ]1 ^! F% m. |
vi /etc/fail2ban/fail2ban.conf0 e6 f1 g' ~. W" w+ z
靽格 logtarget :
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  1. #閮剔+ f; F+ y+ P* ^8 K
  2. #logtarget = SYSLOG  l/ f; ]$ [" n3 V
  3. #隤踵游0 L3 n" Y3 R" y& A* A
  4. logtarget = /var/log/fail2ban.log
銴鋆賭誨蝣
vi /etc/fail2ban/jail.conf (fail2ban銝餉閮剖瑼)
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  1. #閮剔
    ; j4 u& _: s8 N4 ~
  2. #backend = auto
    1 c2 U4 t) v+ `2 ^8 n) K
  3. #隤踵游
    - e  t; e/ C/ }" ^, F0 Z+ r4 `$ p
  4. backend = gamin
銴鋆賭誨蝣
gamin烊inux憟隞嗡銝憒蝻箏雿臭誑肘um靘摰鋆摰
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  1. [ssh-iptables]
    1 [# g- Z) r+ i' Y' d( k: ~
  2. #臬血
    " O6 p. z2 J9 D* {# U3 `6 P' [# G
  3. enabled  = true
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  4. #瞈曉蝔梧雿輻券閮剔喳
    , s2 h1 `6 N. ?; [7 l/ [# h
  5. filter   = sshd
    & }5 j. S  v" R+ A) {1 g+ K# Y
  6. #iptables閮剖4 B8 C$ q3 T' U: l% S- g' }/ \
  7. action   = iptables[name=SSH, port=22022, protocol=tcp]
    ! d* ?. v$ z( ?. v- X- O3 I/ g  c
  8.            #潛餅撖靽∟身摰
    * L; k6 q: K8 V" Q2 c0 {
  9.            sendmail-whois[name=SSH, dest=xxxx@gmail.com, sender=root@xxxx.com]+ {$ x$ i4 l& P

  10. / Y  s% r( Y$ d7 s8 b( [. f8 c
  11. #閬閮瑼5 @1 u, `* v8 x4 q
  12. logpath  = /var/log/secure; B/ X7 f6 ^& t3 K3 T
  13. #擃閰阡航炊甈⊥
    9 v  H+ B0 s2 o& j; I* Z
  14. maxretry = 27 B. Q3 S* c' [, C& e' u
  15. #餅嚗-1銵函內瘞訾餅
    4 Y6 L5 g( y. R2 q" ^$ S8 Q$ A
  16. bantime  = -1
銴鋆賭誨蝣
霈fail2ban啣銝閮剝餅IP閬
( H8 X4 C% L. x! r% m7 n- w券閮剔閮剖銝哨fail2ban瘥甈⊿啣賣箏鋡恍餅IP閮剖靘靘隤迎憒餉血箇餃亙仃鋡剌ail2ban嚗暻澆芾fail2ban啣嚗暻潭餉血臭誑蝜潛閰衣餃叫erver
' k3 f& A6 x6 H& G3 |8 e( q( \憒閬霈fail2ban啣嚗銝閮剝餅IP閬嚗靽格 /etc/init.d/fail2ban 批捆
7 g( ~3 D1 F6 I; W vi /etc/init.d/fail2ban
( v5 `. |) @5 R; J: z曉酒tart()憛嚗乩誑銝#閮餉圾閮剖嚗
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  1. start() {/ ?/ m& X8 j6 ?6 f1 S3 e' t5 a
  2.     echo -n [        DISCUZ_CODE_3        ]quot;Starting fail2ban: "8 ~- \. _& W# A, ^, w' t) ~
  3.     getpid
      ^, i" p4 W' N3 y- n
  4.     if [ -z "$pid" ]; then
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  5.         rm -rf /var/run/fail2ban/fail2ban.sock # unclean in case of restart fal2ban! x7 s' V  W- D, [, p' k$ U! K
  6.         $FAIL2BAN -x start > /dev/null
    " Q9 G7 f* f- a4 q5 \; e
  7.         RETVAL=$?
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  8.     fi! s& z) i7 G* T, v) p, f
  9.     if [ $RETVAL -eq 0 ]; then# k6 z. _2 w( v  i
  10.         touch /var/lock/subsys/fail2ban" f  K4 W0 @1 _; C/ @
  11.         echo_success
    ' R. o. W8 `0 M. }5 ?# L. M
  12.         /sbin/service iptables restart # reloads previously banned ip's. R0 C! r, w  A) X/ T' P
  13.     else
    + S, U9 i8 E+ U# U9 W' B1 \
  14.         echo_failure7 t& n/ V" l3 ^  B5 B' V
  15.     fi
    / g0 ?3 \  w4 z+ B

  16. * {' X* X) B; d' U
  17.     echo
    $ R3 _- P% ]4 T' o, O6 T9 X
  18.     return $RETVAL, e. k; {1 G! J/ f* M
  19. }
銴鋆賭誨蝣
曉酒top()憛嚗乩誑銝
#閮餉圾閮剖嚗. N! b% p8 h* X4 M  G  v; L7 t
  1. stop() {
      Z0 ]1 f, ~7 e( a, H
  2.     echo -n [        DISCUZ_CODE_4        ]quot;Stopping fail2ban: "
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  3.     getpid. o3 _7 l8 I, S2 c: l/ ]( q+ p1 G& z
  4.     RETVAL=$?8 }( s8 h) i$ [. |+ ~
  5.     if [ -n "$pid" ]; then1 \$ h6 H, H6 U
  6.        /sbin/service iptables save # saves banned ip's
    ( L+ \4 }0 Y/ m$ H  @8 X
  7.         $FAIL2BAN stop > /dev/null
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  8.     sleep 1* O+ {& y1 w5 u* g: p
  9.     getpid
    ( U5 ]1 P4 d4 J2 E' {, S2 C
  10.     if [ -z "$pid" ]; then
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  11.         rm -f /var/lock/subsys/fail2ban% Y# x  h% N  p7 t6 Q& e$ W
  12.         echo_success
    : t8 ?' {$ j( r
  13.     else
    , a# S9 a! e( [: Z" `
  14.         echo_failure- N* ?; K; u2 L$ E3 I* ?& i
  15.     fi
    0 Q$ P" b8 |1 [) l& a: |- E
  16.     else9 t+ ?/ J0 K5 i; L3 B( U
  17.         echo_failure6 w5 D5 S+ w& f9 V1 k. j
  18.     fi( v8 h  J( b% ~
  19.     echo
    * a* H: y1 \: }! i+ ]& M; R
  20.     return $RETVAL
銴鋆賭誨蝣
3. 閮剖fail2ban璈摨  t) l$ e# {1 c) j- n0 ^& N$ B

3 q3 w# K0 y' V8 ?8 d& [chkconfig --add fail2ban
$ F+ ?3 j# t, r4 G: C7 W& Y3 Q
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- i7 O) V' W9 Q4 V3 e  k- V2 _隞乩 :
; i" L) @: X: A7 E9 F6 p  xhttp://blog.pulipuli.info/2011/07/centosfail2ban.html  
, ]9 ~8 v# P( E5 jhttp://www.vixual.net/blog/archives/2526 N& w/ o8 f" M0 D

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